Espresso machine



FIG. 1 is a right hand side view of the espresso machine;

FIG. 2 is a front view thereof;

FIG. 3 is a left hand side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is an isometric view thereof. 

The ornamental design for an espresso machine, as shown and described. 